but in this case looking at the fr24 replays they got within 1000 feet and ten minutes so traffic alert shoukd have occured, tapes will tell the story in the crash comic.
I get what you mean and it’s not incorrect, but a terminology issue. Because they are departing/arriving at the same aerodrome within 10 mins of each other they should receive a traffic statement. A traffic alert would be something given when aircraft will operate in unsafe proximity and would be more along the lines of “safety alert, traffic is” and most controllers would give a suggested resolution as well. For reference the traffic parameters are dep/arr within 10 mins for the same aerodrome, 15NM lateral and within 1000ft of each other vertically (2000ft where the pressure level information hasn’t been verified)